CNMG 120408 T9205 Wendeplatten - Tungaloy

Take advantage of the combination of CVD-coated carbide and the wear-resistant T9205 grade for more productive turning of steel, delivered in the ISO CNMG format for straightforward insertion and indexing; order directly via Metav Werkzeuge or consult our team for application support.

CNMG 120408 T9205 – ISO CNMG rhombic turning insert for steel, Tungaloy

The CNMG 120408 T9205 is a CVD-coated, indexable turning insert engineered for productive external and internal turning of steel under stable machining conditions.

• ISO CNMG rhombic geometry, 80° angle
• CVD-coated carbide grade T9205 for wear resistance
• Double-sided chipbreaker for stable chip control
• Cylindrical hole for secure clamping

Higher productivity through a wear-resistant grade and coating

The combination of a CVD-coated carbide substrate and the T9205 grade provides a clear productivity advantage for the machining of steel: improved wear resistance extends tool life while supporting higher cutting speeds in stable set-ups. The coated surface enhances thermal resistance and reduces flank wear during continuous cuts, which leads to fewer indexings and less unscheduled downtime. In practice, this means longer intervals between tool changes and a steadier cycle time on batch operations, supporting consistent output in a production environment.

Reliable compatibility and simple system integration

Compatibility with toolholders is governed by geometric and mechanical parameters — form, clearance angle, tolerance class, clamping, size and thickness — and the CNMG format is one of the widely supported ISO standards. The insert integrates into a standard system comprising an ISO insert, a suitable external holder or boring bar, a shim or clamping set, and spare screws, enabling rapid replacement and repeatable seating. Clear, standardised geometry minimises set-up time and allows straightforward replacement without complex requalification of the holder.

Practical guidance for turning steel with predictable surface quality

For external and internal turning of steel, select the double-sided chipbreaker and T9205 grade to match workpiece material, machining strategy and machine rigidity. The 0° relief angle and 0.8 mm nose radius favour a balance between edge strength and surface finish, while the 4.76 mm plate thickness and rhombic form deliver rigidity during interrupted cuts. The cylindrical hole ensures secure fixation in the clamp and reduces the risk of movement under load. Together these features support consistent component geometry and reliable surface quality in production runs.

For original Tungaloy inserts and tailored technical advice contact Metav Werkzeuge by email at info@metav-werkzeuge.com or by phone on +49 2822 7131930 — our consultants provide application support and fast supply.

Technical data

• Article number: 6785651
• Manufacturer SKU: TUN6785651
• SKU: 6785651-Tungaloy
• Model series: ISO-Drehwendeschneidplatten

Core data

• Geometry: CNMG (rhombic), ISO 120408
• Nose radius: 0.8 mm
• Plate size: 12 mm
• Thickness: 4.76 mm
• Cutting angle: 80°
• Relief angle: 0°
• Hole: with hole (cylindrical)

Special features

• Material: cemented carbide
• Coating: CVD-coated
• Grade: T9205 (wear-resistant)
• Chipbreaker: double-sided
• Applications: external and internal turning of steel
• System components: matching external holder or boring bar, shim/clamping set, spare screws

FAQ

What geometry and angle does the insert have?
The CNMG insert features a rhombic geometry with an 80° cutting angle and a 0° clearance (relief) angle, providing a robust seating and predictable cutting behaviour.

Is this insert suitable for stainless steel?
The T9205 grade is specified for productive turning of steel under stable conditions; for austenitic stainless steels or other challenging alloys, a grade optimised for those materials is recommended.

Can the insert be used for internal turning operations?
Yes, the insert is suitable for both external and internal turning when used with an appropriate boring bar or internal holder compatible with CNMG inserts.

How does the double-sided chipbreaker affect machining?
The double-sided chipbreaker provides controlled chip formation on both indexable faces, improving chip evacuation and contributing to consistent cutting forces during stable turning operations.

What components are required to fit the insert?
A compatible ISO CNMG holder or boring bar, a matching shim or clamping set and the correct clamping screws are required for installation and secure fixation.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.